■ G-Agent: Yellow or red-brown
■ H-Agent: Red or purple
■ V-Agent: Green or black
ABC M8 Paper does not detect vapor. It is best suited for use on nonporous materials. Because some
solvents also cause it to change color, the paper is unreliable for determining the completeness of
decontamination. Night operations cause problems because M8 Paper must be read in a white-light
source. This product cannot be used to detect vapors or chemical agents in water. Exposure to high
temperatures, DS2, or petroleum products may cause false readings.
b. M9 Chemical Agent Detector Paper.
M9 Chemical Agent Detector Paper is the most widely used method of detecting the presence of liquid
chemical agents. This product reacts more rapidly than ABC M8 Detector Paper. It does not detect
chemical agent vapors. The paper indicates the presence of a Nerve Agent (G and V) or a Blister Agent
(H and L) by turning a red or reddish brown color.
M9 Detector Paper consists of a roll of detection paper two inches wide by 30 feet long. The adhesive-
backed roll is packaged in a 7-ounce tear off type dispenser box which is supplied with a resealable
plastic bag and packed in a moisture vapor barrier bag. The complete weight of the item is seven
ounces. For accurate reading of the color change, you must observe M9 Paper using only a white-light
source. During night operations the color changes will not show up when a flashlight with a red filter is
used to read the paper.
The self-adhesive M9 Paper attaches to most surfaces. When attaching it to your protective
overgarment, place it on the upper portion of your right arm, left wrist, and either your left or right ankle
M9 Paper may also be routinely placed on vehicles, equipment, and terrain surfaces for visual warning
and monitoring of a liquid chemical agent attack. When placing it on a piece of equipment, ensure the
location is free of dirt, oil, and grease, and place the paper where it will not be stepped on. This is
especially important since petroleum products cause the paper to change color, thus producing a false